Screw holder special for assembling micro-nano satellite in narrow space

Abstract

The invention relates to a special screw holder for assembling a micro-nano satellite in a narrow space, which belongs to the technical field of micro-satellite assembling tools and comprises a clamping rod, a clamping cavity for inserting a screwdriver (or a wrench) is formed in the clamping rod along the axis direction of the clamping rod, and a locking component for locking the position of the screwdriver (or the wrench) is arranged in the clamping rod. A control assembly used for controlling the locking assembly to lock or loosen the screwdriver (or the wrench) is connected between the clamping assembly and the locking assembly. The clamping rod is coaxially sleeved with a control sleeve in a sliding mode, the control sleeve is connected with a control assembly, and the control assembly controls the locking assembly to lock or loosen a screwdriver (or a wrench) along with reciprocating sliding of the control sleeve along the axis of the control assembly; an elastic clamping piece used for clamping a screw is arranged at one end of the clamping rod, the elastic clamping piece is used for pushing the screw to abut against the end, making contact with the screw, of a screwdriver (or a wrench), and the screw can be clamped conveniently when the screw is installed in a narrow space, and the screw is not prone to falling off.

Description

Technical Field

[0001] This application relates to the technical field of microsatellite assembly tools, and in particular to a screw holder specifically designed for assembling micro and nanosatellites in confined spaces. Background Technology

[0002] In the assembly of micro and nano satellites, internal space is extremely limited. To make full use of the space, the distance between individual units inside the satellite, or the distance between an individual unit and the satellite's bulkhead, is often restricted. This design results in many confined spaces. At the same time, to reduce the influence of magnetic fields, ordinary steel screws are generally not used; instead, stainless steel or titanium alloy screws are used.

[0003] Therefore, when installing individual units inside micro and nano satellites, due to the limited space for wrenches and hand movement, tools such as tweezers are often used to hold screws during assembly. However, this requires first using tweezers to put the screw into the threaded hole and then tightening it with a screwdriver.

[0004] However, this installation method makes it difficult to align the screws with the threaded holes, and even if aligned, the screws are prone to falling off. Fallen screws need to be picked up again, which is time-consuming, reduces work efficiency, and also consumes the energy of installation engineers, increasing their workload. Summary of the Invention

[0005] To facilitate screw clamping in confined spaces and prevent screws from falling out, this application provides a special screw clamp for assembling micro-nano satellites in confined spaces.

[0006] The present application provides a special screw holder for assembling micro / nano satellites in confined spaces, which adopts the following technical solution: A screw holder specifically designed for assembling micro / nano satellites in confined spaces includes: A clamping rod is provided with a clamping cavity along its own axis for inserting a screwdriver (or wrench). The clamping rod is provided with a locking component for locking the position of the screwdriver (or wrench). A control component for controlling the locking component to lock or release the screwdriver (or wrench) is connected between the clamping rod and the locking component. A control sleeve is coaxially slidably sleeved on the outside of the clamping rod. The control sleeve is connected to the control component. As the control sleeve slides back and forth along its own axis, the control component controls the locking component to lock or release the screwdriver (or wrench). One end of the clamping rod is provided with an elastic clamping member for clamping the screw. The elastic clamping member is used to push the screw against the end of the screwdriver (or wrench) that is in contact with the screw.

[0007] By adopting the above technical solution, the control sleeve slides away from the elastic clamping member, the screwdriver (or wrench) is inserted into the clamping cavity, the control sleeve slides closer to the elastic clamping member, and the locking component locks the screwdriver (or wrench). The end of the screwdriver (or wrench) connected to the screw is located at the opening of the clamping cavity directly opposite the elastic clamping member. Then, the screw to be tightened is placed at the elastic clamping member and the screw is aligned with the screwdriver (or wrench) to prevent the screw from falling off. This application shortens the length of the screw clamping tool, making it easier to clamp the screw when installing screws in narrow spaces and preventing the screw from falling off.

[0008] Optionally, the locking assembly includes a plurality of elastic locking slides circumferentially spaced around the axis of the clamping rod. The wall of the clamping cavity is provided with a locking groove for the locking slides to slide along their own axis. The locking slides are provided with locking protrusions. The clamping rod is coaxially provided with a conical locking groove for sliding and abutting against the locking protrusions. The conical locking groove is located on the side of the locking slides facing the elastic clamping member and connects the locking groove and the clamping cavity. The diameter of the groove wall of the conical locking groove gradually decreases along the direction closer to the elastic clamping member.

[0009] Optionally, the control component includes a control loop and a control spring; The clamping rod has a control groove that is slidably connected to the control ring on the same axis. The control groove is located on the side of the locking groove opposite to the conical locking groove and is connected to the locking groove. The control sleeve and the locking strip are detachably connected to the control ring. The control spring is located in the control groove and on the side of the control ring opposite to the locking groove. The two ends of the control spring are respectively connected to the control ring and the clamping rod. The control spring is extended in its normal state, the locking protrusion abuts against the wall of the conical locking groove, and one end of the locking slide bar extends into the clamping cavity.

[0010] Optionally, the elastic clamping member includes a mounting base and two sets of opposing combined clamping plates, the combined clamping plates including a first clamping plate, a second clamping plate and a third clamping plate, and the mounting base is mounted on the clamping rod; The first clamping plate is arranged along the axis parallel to the clamping rod and one end is detachably connected to the mounting base. The other end of the first clamping plate is connected to one end of the second clamping plate. The other end of the second clamping plate is inclined towards the axis of the clamping rod and connected to one end of the third clamping plate. The other end of the third clamping plate is inclined away from the axis of the clamping rod. The angle between the third clamping plate and the second clamping plate is less than 90 degrees. The screw nut is located between the first clamping plates of the two sets of combined clamping plates, and the second clamping plates of the two sets of combined clamping plates clamp the threaded section of the screw.

[0011] Optionally, the first clamping plate includes a first plate segment detachably connected to the mounting base and a second plate segment connected to the second clamping plate, wherein the thickness of the second plate segment is less than the thickness of the first plate segment, the second clamping plate, and the third clamping plate.

[0012] Optionally, a clamping protrusion is provided at the connection between the second clamping plate and the third clamping plate. The clamping protrusion is flush with the end face of the second clamping plate facing the clamping rod. The clamping protrusion is located on the side of the third clamping plate away from the first clamping plate and the angle between the clamping protrusion and the third clamping plate is greater than 90 degrees.

[0013] Optionally, the clamping protrusion has a clamping groove for clamping the threaded section of the screw at one end facing the axis of the clamping rod. The clamping groove is arranged in a "V" shape, and the center line connecting the clamping grooves on the two sets of combined clamping plates is perpendicular to the axis of the clamping rod.

[0014] Optionally, the other end of the third clamping plate is located on the side of the first clamping plate away from the clamping rod, and the connection between the third clamping plate and the second clamping plate is provided with a rounded corner.

[0015] Optionally, the clamping rod includes a first rod segment, a second rod segment, and a third rod segment that are detachably connected in sequence; The diameters of the first and third rod segments are both larger than that of the second rod segment. The control sleeve is slidably connected to the first and third rod segments. The clamping cavity is located in the second rod segment. The locking groove passes through the second rod segment. The tapered locking groove is located in the third rod segment. The control groove is located between the first and third rod segments. The second rod segment passes through the third rod segment, and one end of the second rod segment is detachably connected to the mounting base.

[0016] In summary, this application includes at least one of the following beneficial technical effects of a dedicated screw holder for assembling micro / nano satellites in confined spaces: 1. Control the sleeve to slide away from the elastic clamping element, insert the screwdriver (or wrench) into the clamping cavity, control the sleeve to slide closer to the elastic clamping element, and lock the screwdriver (or wrench) with the locking component. Place the screw to be tightened at the elastic clamping element and align the screw with the screwdriver (or wrench) to prevent the screw from falling off. This application shortens the length of the screw clamping tool, making it easier to clamp the screw when installing screws in narrow spaces and preventing the screw from falling off. 2. When no tool is inserted into the clamping cavity, the locking spring extends, and the inclined end of the locking slide bar enters the clamping cavity. When the screwdriver (or wrench) is inserted into the clamping cavity, the control sleeve drives the control ring to compress the locking spring, and the locking slide bar returns to its original position until the screwdriver (or wrench) is fully inserted into the clamping cavity. Then, the control sleeve is released, and the locking spring returns to its original position to drive the locking slide bar to clamp the screwdriver (or wrench). 3. The screw slides in between the two first clamping plates and is positioned by the clamping groove. Rotate the screw to adjust the connection with the screwdriver (or wrench) to prevent the screw from falling out during movement and tightening. The third clamping plate abuts against the unit before the screw. As the screw is screwed into the unit, the third clamping plate deforms, thereby moving the second clamping plate away from the screw, releasing the screw from the clamping state for assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of the screw holder in operation according to this application.

[0018] Figure 2 This is a schematic diagram of the internal structure of the screw holder in operation according to this application.

[0019] Figure 3 This is a schematic diagram of the external structure of the screw holder of this application.

[0020] Figure 4 This is a schematic diagram of the internal structure of the screw holder of this application.

[0021] Figure 5 This is a schematic diagram showing the position of the locking component and the second rod segment in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the structure of the elastic clamping member in the embodiments of this application.

[0023] In the diagram: 1. Clamping rod; 11. Clamping cavity; 12. Locking groove; 13. Conical locking groove; 14. Control groove; 15. First rod segment; 16. Second rod segment; 17. Third rod segment; 2. Locking assembly; 21. Locking slide bar; 22. Locking protrusion; 3. Control assembly; 31. Control ring; 32. Control spring; 4. Control sleeve; 5. Elastic clamping element; 51. Mounting base; 52. Combined clamping plate; 521. First clamping plate; 5211. First plate segment; 5212. Second plate segment; 522. Second clamping plate; 523. Third clamping plate; 524. Clamping protrusion; 525. Clamping groove; 6. Screwdriver (or wrench); 7. Screw. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] This application discloses a screw holder specifically designed for assembling micro / nano satellites in confined spaces. (Refer to...) Figure 1 and Figure 2The device includes a clamping rod 1, which has a clamping cavity 11 along its own axis for inserting a screwdriver (or wrench) 6. The clamping rod 1 has a locking component 2 for locking the position of the screwdriver (or wrench) 6. A control component 3 for controlling the locking component 2 to lock or release the screwdriver (or wrench) 6 is connected between the clamping rod 1 and the locking component 2.

[0026] To facilitate the operation of the control component 3, a control sleeve 4 is coaxially slidably sleeved on the outside of the clamping rod 1. The control sleeve 4 is connected to the control component 3. As the control sleeve 4 slides back and forth along its own axis, the control component 3 controls the locking component 2 to lock or release the screwdriver (or wrench) 6.

[0027] To prevent the screw 7 from falling off, one end of the clamping rod 1 is provided with an elastic clamping member 5 for clamping the screw 7. The elastic clamping member 5 is used to push the screw 7 against the end of the screwdriver (or wrench) 6 that is in contact with the screw 7.

[0028] Before assembling screw 7, control sleeve 4 slides away from elastic clamping member 5, screwdriver (or wrench) 6 is inserted into clamping cavity 11, control sleeve 4 slides closer to elastic clamping member 5, locking assembly 2 locks screwdriver (or wrench) 6, one end of screwdriver (or wrench) 6 connected to screw 7 is located in clamping cavity 11 directly opposite the opening of elastic clamping member 5, then screw 7 to be tightened is placed in elastic clamping member 5, screw 7 and screwdriver (or wrench) 6 are aligned and engaged, so that screw 7 is prevented from falling off when tightening screw 7 later, and the space of handle of screwdriver (or wrench) 6 is saved by clamping rod 1, shortening the length of screw 7 clamping tool, so as to achieve the effect of easy clamping of screw 7 in narrow space and preventing screw 7 from falling off.

[0029] Reference Figure 3 and Figure 4 The locking assembly 2 includes several elastic locking slides 21 arranged circumferentially around the axis of the clamping rod 1, and the wall of the clamping cavity 11 is provided with a locking groove 12 for the locking slides 21 to slide along their own axis.

[0030] Among them, such as Figure 4 and Figure 5 As shown, the locking slide 21 is provided with a locking protrusion 22, and the clamping rod 1 is coaxially provided with a conical locking groove 13 for sliding and abutting against the locking protrusion 22. The conical locking groove 13 is located on the side of the locking slide 21 facing the elastic clamping member 5 and connects the locking slide groove 12 and the clamping cavity 11. The diameter of the groove wall of the conical locking groove 13 gradually decreases along the direction close to the elastic clamping member 5.

[0031] Reference Figure 4 and Figure 5 The control component 3 includes a control ring 31 and a control spring 32.

[0032] The clamping rod 1 has a control groove 14 that is slidably connected to the control ring 31 on the same axis. The control groove 14 is located on the side of the locking groove 12 away from the conical locking groove 13 and is connected to the locking groove 12. The control sleeve 4 and the locking slide 21 are detachably connected to the control ring 31. The control spring 32 is located in the control groove 14 and on the side of the control ring 31 away from the locking groove 12. The two ends of the control spring 32 are connected to the control ring 31 and the clamping rod 1, respectively.

[0033] When the screwdriver (or wrench) 6 is not clamped, the control spring 32 extends in its normal state, and the control ring 31 pushes the locking protrusion 22 against the groove wall of the conical locking groove 13, so that one end of the elastic locking slide 21 bends and extends into the clamping cavity 11.

[0034] When it is necessary to clamp the screwdriver (or wrench) 6, manually push the control sleeve 4 to slide away from the elastic clamping member 5. The control spring 32 contracts, the locking protrusion 22 moves away from the tapered locking groove 13, and the locking slide 21 moves out of the clamping cavity 11 to allow the screwdriver (or wrench) 6 to be inserted into the clamping cavity 11. Then, release the control sleeve 4, and the locking slide 21 clamps the screwdriver (or wrench) 6, achieving a locking effect on the screwdriver (or wrench) 6. This is because the clamping rod 1 acts as the handle part of the screwdriver (or wrench) 6, thereby shortening the length of the screwdriver (or wrench) 6 and making it easier to use in narrow spaces.

[0035] Reference Figure 3 and Figure 6 The elastic clamping member 5 includes a mounting base 51 and two sets of opposingly arranged combination clamping plates 52. The combination clamping plates 52 include a first clamping plate 521, a second clamping plate 522 and a third clamping plate 523. The mounting base 51 is mounted on the clamping rod 1. The first clamping plate 521 is arranged parallel to the axis of the clamping rod 1 and one end is detachably connected to the mounting base 51. The other end of the first clamping plate 521 is connected to one end of the second clamping plate 522. The other end of the second clamping plate 522 is inclined towards the axis of the clamping rod 1 and connected to one end of the third clamping plate 523. The other end of the third clamping plate 523 is inclined away from the axis of the clamping rod 1. Figure 2 As shown, the angle between the third clamping plate 523 and the second clamping plate 522 is less than 90 degrees.

[0036] After tightening the screwdriver (or wrench) 6, begin placing the screw 7. The nut of the screw 7 is located between the first clamping plate 521 of the two sets of combined clamping plates 52. After the nut is aligned with the screwdriver (or wrench) 6, it is locked in place. The second clamping plate 522 of the two sets of combined clamping plates 52 clamps the threaded section of the screw 7 to prevent the screw 7 from falling off.

[0037] In addition, a clamping flange 524 is provided at the connection between the second clamping plate 522 and the third clamping plate 523. The clamping flange 524 is flush with the end face of the second clamping plate 522 opposite to the clamping rod 1. Figure 2 As shown, the clamping protrusion 524 is located on the side of the third clamping plate 523 away from the first clamping plate 521 and the angle between it and the third clamping plate 523 is greater than 90 degrees.

[0038] In addition, the other end of the third clamping plate 523 is located on the side of the first clamping plate 521 away from the clamping rod 1, and the connection between the third clamping plate 523 and the second clamping plate 522 is provided with a rounded corner.

[0039] The clamping flange 524 and the rounded corners enhance the structural strength of the second clamping plate 522 and the third clamping plate 523, thereby improving the clamping effect on the screw 7. Furthermore, by setting the angle of the third clamping plate 523, it is possible to prevent the third clamping plate 523 from affecting the screw 7 screwing in and assembly, while also limiting the deformation direction of the third clamping plate 523.

[0040] To further prevent the screw 7 from falling off during clamping, a clamping groove 525 for clamping the threaded section of the screw 7 is provided at one end of the clamping flange 524 that is directly opposite the axis of the clamping rod 1. The clamping groove 525 is arranged in a "V" shape, and the center line connecting the clamping grooves 525 on the two sets of combined clamping plates 52 is perpendicular to the axis of the clamping rod 1.

[0041] The threaded section of screw 7 is located in the clamping groove 525, which not only clamps screw 7 but also limits the position of screw 7 so that screw 7 can quickly engage with screwdriver (or wrench) 6.

[0042] To further control the deformation direction of the combined clamping plate 52, the first clamping plate 521 includes a first plate segment 5211 detachably connected to the mounting base 51 and a second plate segment 5212 connected to the second clamping plate 522. The thickness of the second plate segment 5212 is less than the thickness of the first plate segment 5211, the second clamping plate 522 and the third clamping plate 523.

[0043] When assembling screw 7, screw 7 slides in between the two first clamping plates 521 and is positioned by the clamping groove 525. Rotating screw 7 adjusts the connection with screwdriver (or wrench) 6 to prevent screw 7 from falling off during movement and tightening. The third clamping plate 523 abuts against the unit before screw 7. As screw 7 is screwed into the unit, the third clamping plate 523 deforms, thereby moving the second clamping plate 522 away from screw 7, releasing screw 7 from the clamping state for assembly.

[0044] As screw 7 is screwed into the unit, the other end of the third clamping plate 523 can slide continuously away from screw 7 while in contact with the unit, thereby moving the second clamping plate 522 away from screw 7. Since screw 7 has already been partially screwed into the unit, there is no need to worry about screw 7 falling out. At the same time, it is easy to remove the screwdriver (or wrench) 6 from screw 7 after tightening it. By setting the thickness of the second plate segment 5212, the tilt angle of the third clamping plate 523, and the length of the third clamping plate 523, the deformation direction of the third clamping plate 523 when screw 7 is screwed in can be better controlled.

[0045] To facilitate the assembly of the screw 7 holder and improve its structural flexibility and manufacturing complexity, such as... Figure 2 and Figure 4 As shown, the clamping rod 1 includes a first rod segment 15, a second rod segment 16, and a third rod segment 17 that are detachably connected in sequence.

[0046] The diameters of the first rod segment 15 and the third rod segment 17 are both larger than those of the second rod segment 16. The control sleeve 4 is slidably connected to the first rod segment 15 and the third rod segment 17. The clamping cavity 11 is located in the second rod segment 16. The locking groove 12 passes through the second rod segment 16. The conical locking groove 13 is located in the third rod segment 17. The control groove 14 is located between the first rod segment 15 and the third rod segment 17. One end of the second rod segment 16 passes through the third rod segment 17 and is detachably connected to the mounting base 51.

[0047] By adjusting the position of the third segment 17 on the second segment 16, the length of the locking slide 21 extending into the clamping cavity 11 can be adjusted to accommodate screwdrivers (or wrenches) 6 of different sizes. Meanwhile, the first clamping plate 521, the second clamping plate 522, and the third clamping plate 523 are all made of elastic and deformable material, allowing for the use of various types of screws 7 in sizes M3, M4, M5, and M6, thereby further expanding the compatibility range of the screw 7 holder.

[0048] The implementation principle of the screw 7 holder for assembling micro-nano satellites in narrow spaces according to the embodiments of this application is as follows: Before assembling the screw 7, the control sleeve 4 slides away from the elastic clamping member 5, the screwdriver (or wrench) 6 is inserted into the clamping cavity 11, the control sleeve 4 slides closer to the elastic clamping member 5, the locking component 2 locks the screwdriver (or wrench) 6, the end of the screwdriver (or wrench) 6 connected to the screw 7 is located at the opening of the clamping cavity 11 directly opposite the elastic clamping member 5, then the screw 7 to be tightened is placed in the clamping groove 525, the screw 7 and the screwdriver (or wrench) 6 are aligned and engaged, as the screw 7 is continuously screwed into the single machine, the third clamping plate 523 drives the second clamping plate 522 away from the screw 7 until the screw 7 is tightened, then the screwdriver (or wrench) 6 is removed to complete the assembly. This application eliminates the need for a handle in the screwdriver (or wrench) 6 by using a clamping rod 1, thus shortening the length of the screw 7 clamping tool. By using a combination clamping plate 52, the screw 7 is prevented from falling out without affecting its assembly. This achieves the effect of making it easy to clamp the screw 7 in narrow spaces and preventing it from falling out.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A screw holder specifically designed for assembling micro / nano satellites in confined spaces, characterized in that, include: A clamping rod (1) is provided with a clamping cavity (11) for inserting a screwdriver (or wrench) (6) along its own axis. A locking component (2) for locking the position of the screwdriver (or wrench) (6) is provided in the clamping rod (1). A control component (3) for controlling the locking component (2) to lock or release the screwdriver (or wrench) (6) is connected between the clamping rod (1) and the locking component (2). The clamping rod (1) is coaxially slidably fitted with a control sleeve (4), which is connected to the control component (3). As the control sleeve (4) slides back and forth along its own axis, the control component (3) controls the locking component (2) to lock or release the screwdriver (or wrench) (6). One end of the clamping rod (1) is provided with an elastic clamping member (5) for clamping the screw (7). The elastic clamping member (5) is used to push the screw (7) against the end of the screwdriver (or wrench) (6) that is in contact with the screw (7).

2. The screw holder for assembling micro / nano satellites in confined spaces according to claim 1, characterized in that: The locking assembly (2) includes several elastic locking slides (21) arranged circumferentially around the axis of the clamping rod (1). The wall of the clamping cavity (11) is provided with a locking groove (12) for the locking slides (21) to slide along their own axis. The locking slides (21) are provided with locking protrusions (22). The clamping rod (1) is coaxially provided with a conical locking groove (13) for sliding against the locking protrusions (22). The conical locking groove (13) is located on the side of the locking slides (21) facing the elastic clamping member (5) and connects the locking groove (12) and the clamping cavity (11). The diameter of the groove wall of the conical locking groove (13) gradually decreases in the direction close to the elastic clamping member (5).

3. A special screw holder for assembling micro / nano satellites in confined spaces according to claim 2, characterized in that: The control component (3) includes a control ring (31) and a control spring (32); The clamping rod (1) has a control groove (14) that is slidably connected to the control ring (31) on the same axis. The control groove (14) is located on the side of the locking groove (12) away from the conical locking groove (13) and is connected to the locking groove (12). The control sleeve (4) and the locking strip (21) are detachably connected to the control ring (31). The control spring (32) is located in the control groove (14) and on the side of the control ring (31) away from the locking groove (12). The two ends of the control spring (32) are respectively connected to the control ring (31) and the clamping rod (1). The control spring (32) is extended in the normal state, the locking protrusion (22) abuts against the groove wall of the conical locking groove (13), and one end of the locking slide (21) extends into the clamping cavity (11).

4. A screw holder for assembling micro / nano satellites in confined spaces according to claim 3, characterized in that: The elastic clamping member (5) includes a mounting base (51) and two sets of opposing combination clamping plates (52), the combination clamping plates (52) including a first clamping plate (521), a second clamping plate (522) and a third clamping plate (523), and the mounting base (51) is mounted on the clamping rod (1); The first clamping plate (521) is arranged along the axis parallel to the clamping rod (1) and one end is detachably connected to the mounting base (51). The other end of the first clamping plate (521) is connected to one end of the second clamping plate (522). The other end of the second clamping plate (522) is inclined toward the axis closer to the clamping rod (1) and connected to one end of the third clamping plate (523). The other end of the third clamping plate (523) is inclined along the axis away from the clamping rod (1). The included angle between the third clamping plate (523) and the second clamping plate (522) is less than 90 degrees. The nut of the screw (7) is located between the first clamping plate (521) of the two sets of combined clamping plates (52), and the second clamping plate (522) of the two sets of combined clamping plates (52) clamps the threaded section of the screw (7).

5. A screw holder for assembling micro / nano satellites in confined spaces according to claim 4, characterized in that: The first clamping plate (521) includes a first plate segment (5211) detachably connected to the mounting base (51) and a second plate segment (5212) connected to the second clamping plate (522). The thickness of the second plate segment (5212) is less than the thickness of the first plate segment (5211), the second clamping plate (522) and the third clamping plate (523).

6. A screw holder for assembling micro / nano satellites in confined spaces according to claim 4, characterized in that: A clamping protrusion (524) is provided at the connection between the second clamping plate (522) and the third clamping plate (523). The clamping protrusion (524) is flush with the end face of the second clamping plate (522) facing the clamping rod (1). The clamping protrusion (524) is located on the side of the third clamping plate (523) away from the first clamping plate (521) and the angle between the clamping protrusion (524) and the third clamping plate (523) is greater than 90 degrees.

7. A screw holder for assembling micro / nano satellites in confined spaces according to claim 6, characterized in that: The clamping flange (524) has a clamping groove (525) for clamping the threaded section of the screw (7) at one end facing the axis of the clamping rod (1). The clamping groove (525) is arranged in a "V" shape. The center line connecting the clamping grooves (525) on the two sets of combined clamping plates (52) is perpendicular to the axis of the clamping rod (1).

8. A screw holder for assembling micro / nano satellites in confined spaces according to claim 4, characterized in that: The other end of the third clamping plate (523) is located on the side of the first clamping plate (521) away from the clamping rod (1), and the connection between the third clamping plate (523) and the second clamping plate (522) is provided with a rounded corner.

9. A screw holder for assembling micro / nano satellites in confined spaces according to claim 4, characterized in that: The clamping rod (1) includes a first rod segment (15), a second rod segment (16) and a third rod segment (17) that are detachably connected in sequence. The diameters of the first rod segment (15) and the third rod segment (17) are both larger than those of the second rod segment (16). The control sleeve (4) is slidably connected to the first rod segment (15) and the third rod segment (17). The clamping cavity (11) is located in the second rod segment (16). The locking groove (12) passes through the second rod segment (16). The conical locking groove (13) is located in the third rod segment (17). The control groove (14) is located between the first rod segment (15) and the third rod segment (17). The second rod segment (16) passes through the third rod segment (17), and one end of the second rod segment (16) is detachably connected to the mounting base (51).

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